CVE-2026-46057: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: landlock: Fix LOG_SUBDOMAINS_OFF inheritance across fork() hook_cred_transfer() only copies the Landlock security blob when the source credential has a domain. This is inconsistent with landlock_restrict_self() which can set LOG_SUBDOMAINS_OFF on a credential without creating a domain (via the ruleset_fd=-1 path): the field is committed but not preserved across fork() because the child's prepare_creds() calls hook_cred_transfer() which skips the copy when domain is NULL. This breaks the documented use case where a process mutes subdomain logs before forking sandboxed children: the children lose the muting and their domains produce unexpected audit records. Fix this by unconditionally copying the Landlock credential blob.

Засегнати продукти

• Linux Linux: ead9079f75696a028aea8860787770c80eddb8f9 преди 2fcde49092aac55d5beef43fdd3633217672f7d1; ead9079f75696a028aea8860787770c80eddb8f9 преди 1c513b8a00df13d231021e74ad92babb3fedf64a; ead9079f75696a028aea8860787770c80eddb8f9 преди 874c8f83826c95c62c21d9edfe9ef43e5c346724
• Linux Linux: 6.15; преди 6.15; 6.18.27 до 6.18.*; 7.0.4 до 7.0.*; от 7.1 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-46057
• https://nvd.nist.gov/vuln/detail/CVE-2026-46057
• https://git.kernel.org/stable/c/2fcde49092aac55d5beef43fdd3633217672f7d1
• https://git.kernel.org/stable/c/1c513b8a00df13d231021e74ad92babb3fedf64a
• https://git.kernel.org/stable/c/874c8f83826c95c62c21d9edfe9ef43e5c346724